Friedhelm Henrich

Follow

Person

Bochum, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Longwall mining machine for the mining of thick mineral seams
- Patent number 4,883,323
- Issue date Nov 28, 1989
- Gebr. Eickhoff Maschinenfabrik und. Eisengieberei mbH
- Friedhelm Henrich
- E21 - EARTH DRILLING MINING
Information Patent Grant
Mining machine, particularly for the working of low mine seams
- Patent number 4,166,652
- Issue date Sep 4, 1979
- Gebr. Eickhoff Maschinenfabrik und Eisengiesserei m.b.H.
- Klaus Oberste-Beulmann
- E21 - EARTH DRILLING MINING